Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Start of December brings a slight shift in the average high-temperature, dipping a bit from November's comfortable 17.1°C (62.8°F) to a fresh 12.5°C (54.5°F). The month of December in Hayama is marked by an average minimum temperature of 8.4°C (47.1°F), slightly cooler than its daytime counterpart.Humidity
The average relative humidity in December in Hayama is 64%.Rainfall
February and December are months with the least rain when the rain falls for 8.7 days and typically aggregates up to 39mm (1.54") of rain.Snowfall
In Hayama, Japan, snow does not fall in April through December.Sea temperature
In Hayama, in December, the average water temperature is 18.9°C (66°F).Note: Swimming is not enjoyable for most people in water that is 18.9°C (66°F). As the temperature descends from 21°C (69.8°F) to 15°C (59°F), breathing control becomes harder.
Daylight
With an average of 9h and 48min of daylight, December has the shortest days of the year.On the first day of December in Hayama, sunrise is at 06:31 and sunset at 16:29. On the last day of the month, sunrise is at 06:50 and sunset at 16:39 JST.
Sunshine
In Hayama, the average sunshine in December is 6.1h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 3 in December converts into the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Frequently asked questions
What are December temperatures in Hayama?
What is the average humidity in December in Hayama?
What is the driest month in Hayama?
How much does it rain in Hayama in December?
When it does not snow in Hayama?
Does it snow in Hayama in December?
What is the sea temperature in December in Hayama?
What is the month with the shortest days in Hayama?
How many hours of daylight does Hayama have in December?
What time are sunrise and sunset in December in Hayama?
How long on average sun shines in December in Hayama?
When is the lowest UV index in Hayama?
What is the UV index intensity in December in Hayama?
Average temperature in December
Hayama, Japan
- Average high temperature in December: 12.5°C
The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (9.8°C).
- Average low temperature in December: 8.4°C
The month with the highest average low temperature is August (25.3°C).
The coldest month (with the lowest average low temperature) is January (5.3°C).
Average pressure in December
Hayama, Japan
- Average pressure in December: 1016.2mbar
The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in December
Hayama, Japan
- Average wind speed in December: 19.1km/h
The windiest month (with the highest average wind speed) is March (20.8km/h).
The calmest month (with the lowest average wind speed) is June (15.9km/h).
Average humidity in December
Hayama, Japan
- Average humidity in December: 64%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is January (61%).
Average rainfall in December
Hayama, Japan
- Average rainfall in December: 39mm
The wettest month (with the highest rainfall) is October (119mm).
The driest months (with the least rainfall) are February and December (39mm).
Average rainfall days in December
Hayama, Japan
- Average rainfall days in December: 8.7 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in December
Hayama, Japan
- Average snowfall in December: 0mm
The month with the highest snowfall is February (10mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in December
Hayama, Japan
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature in December
Hayama, Japan
- Average sea temperature in December: 18.9°C
The best month for swimming (with the highest average sea temperature) is August (26.2°C).
The coldest months (with the lowest average sea temperature) are February and March (16.2°C).
Average daylight in December /
Average sunshine in December
Hayama, Japan
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 6h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in December
Hayama, Japan
- Average sunshine days in December: 21.3 days
The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in December
Hayama, Japan
- Average UV index in December: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in December
Hayama, Japan
- Average cloud cover in December: 31
The months with the most cloud cover are March, June and October (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Hayama, Japan
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Hayama, Japan
Weather forecast for your location
2. Allow the app to use your location
